import CryptoJS from "crypto-js"
import config from "../config"

export interface CryptoType {
  Decrypt: Function,
  Encrypt: Function,
  SHA256: Function,
}
// import sha256 from 'crypto-js/sha256';
const key = CryptoJS.enc.Utf8.parse(config.cryptoKey); //十六位十六进制数作为秘钥
const iv = CryptoJS.enc.Utf8.parse(config.cryptoKeyOffset); //十六位十六进制数作为秘钥偏移量

//解密方法
function Decrypt(word: string): string {
    let encryptedHexStr = CryptoJS.enc.Hex.parse(word);
    let srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
    let decrypt = CryptoJS.AES.decrypt(srcs, key, { iv: iv, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7 });
    let decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
    return decryptedStr.toString();
}
//加密方法
function Encrypt(word: string): string {
    let srcs = CryptoJS.enc.Utf8.parse(word);
    let encrypted = CryptoJS.AES.encrypt(srcs, key, { iv: iv, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7 });
    return encrypted.ciphertext.toString().toUpperCase();
}

function SHA256(word: string): string {
    let srcs = CryptoJS.enc.Utf8.parse(word);
    let encrypted = CryptoJS.SHA256(srcs).toString()
    return encrypted
}
const Secret: CryptoType = {
	Decrypt ,
	Encrypt,
  SHA256,
}
export default Secret